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Non-load-bearing autoclaved aerated concrete wall material prepared by doping saponin air entraining agents

A saponin-based air-entraining agent and concrete wall technology, which is applied in the field of green and energy-saving building materials, can solve the problems of low pass rate of block products, low slurry water-material mixing ratio, poor pouring stability, etc., and achieve the utilization of masonry strength Large coefficient, good sound absorption and sound insulation effect, and low production energy consumption

Inactive Publication Date: 2014-11-05
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the production process of aerated concrete, there are generally low slurry-water-material mix ratios, poor pouring stability, and easy occurrence of slurry mold collapse and green body shrinkage. Block products generally have low pass rate, high bulk density, and low compressive strength. , Large and uneven pores, less pores, high thermal conductivity, short fire resistance limit, poor durability, etc.

Method used

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  • Non-load-bearing autoclaved aerated concrete wall material prepared by doping saponin air entraining agents
  • Non-load-bearing autoclaved aerated concrete wall material prepared by doping saponin air entraining agents

Examples

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Comparison scheme
Effect test

Embodiment 1

[0039] According to the formula in Table 1, each raw material was quantitatively weighed, and 1093 kg of machine-made sand and weathered sand mixture, 41 kg of gypsum, and 680 kg of surface water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 250.6 kg of lime, Mix 230.6 kg of cement and the rest with water, stir for a certain time, and control the temperature of the slurry. When the temperature is ≥41°C, add water-soluble aluminum powder paste (1.55 kg in terms of aluminum) and air-entraining agent water (based on saponin 0.275 kg), stirring for several times to control the degree of expansion of the slurry, when the degree of expansion ≥ 39 cm, the inner volume of the slurry injection is 3.24 m 3 After the pouring is completed, the mold is moved to the static parking room for maintenance for a certain period of time. After the green body meets the solidification requirements, it is moved out of the static parking room. After cutting and ...

Embodiment 2

[0042] According to the formula in Table 1, each raw material was quantitatively weighed, and 1086 kg of river sand, 42 kg of gypsum and 680 kg of river water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 239.8 kg of lime, 241.1 kg of cement and the remaining Measure the mixing water, stir for a certain time, control the temperature of the slurry, when the temperature is ≥ 41°C, pour 1.50 kg of aluminum powder and air-entraining agent powder (0.25 kg in terms of saponin) directly, and stir for a certain time to control the expansion of the slurry degree, when the expansion degree is ≥39 cm, the inner volume of slurry injection is 3.24 m 3 After the pouring is completed, the mold is moved to the static parking room for maintenance for a certain period of time. After the green body meets the solidification requirements, it is moved out of the static parking room. After cutting and forming according to the product specifications, the mold i...

Embodiment 3

[0045] According to the formula in Table 1, each raw material was quantitatively weighed, and 1079 kg of sea sand, 43 kg of gypsum and 680 kg of seawater were first poured into the pouring pool, and stirred to form a mortar slurry, and then 231.2 kg of lime, 251.5 kg of cement and the remaining Mix water in a certain amount, stir for a certain time, control the temperature of the slurry, when the temperature is ≥41°C, add water-soluble aluminum powder paste (1.45 kg as aluminum), air-entraining agent powder (0.225 kg as saponin) and water 1.8 kg of the suspension formed, stirring for a certain time to control the degree of expansion of the slurry, when the degree of expansion ≥ 39 cm, the inner volume of the slurry injection is 3.24 m 3 After the pouring is completed, the mold is moved to the static parking room for maintenance for a certain period of time. After the green body meets the solidification requirements, it is moved out of the static parking room. After cutting and ...

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Abstract

The invention provides a non-load-bearing autoclaved aerated concrete wall material prepared by doping saponin air entraining agents. The autoclaved aerated concrete is prepared by using calcium and siliceous materials as main raw materials, doping gas generating agents, regulating agents and air entraining agents, and carrying out hydration reaction, mold forming by pouring, blank forming by procuring, forming by cutting, autoclaved curing and out-kettle processing. The dry density, compressive strength, mean pore diameter and percent of pass of the product are respectively less than 495kg / m<3>, more than 3.55MPa, less than 0.45mm and more than 96%. By doping a small quantity of saponin concrete air entraining agents, the ratio of water to material, unit aluminium powder gas evolution and pouring stability in the production process and the volume, strength and quality of the product can be obviously increased. The wall material is novel in conception, rich in raw materials, simple in process and low in cost, is convenient to implement and has greater generalization performance. The product is a novel green wall material, can be applied to processing and construction of non-load-bearing walls, wallboards and roofing boards of buildings, and is a single wall material capable of meeting more than 65% of energy saving requirements in cold regions in China.

Description

technical field [0001] The invention relates to a non-load-bearing autoclaved aerated concrete wall material prepared by mixing saponin air-entraining agents, relates to the green chemical preparation of aerated concrete, and belongs to the fields of novel environment-friendly fine chemical materials and green, environment-friendly and energy-saving building materials. Background technique [0002] The development of new wall materials is a strategic demand for promoting the sustainable and healthy development of my country's economic society and building an ecological country. Air-entrained concrete is a new type of green environmental protection and energy-saving material. It refers to the main raw materials of calcareous and siliceous materials, mixed with air-generating agents, and formed by hydration reaction, pouring molding, pre-curing cutting, autoclaving and other processes. The porous new wall material is a new type of environmental protection and energy-saving bui...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/00C04B24/10
Inventor 陈剑锋陈浩李娜
Owner FUZHOU UNIV
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